summaryrefslogtreecommitdiff
path: root/cmds/installd/commands.c
diff options
context:
space:
mode:
Diffstat (limited to 'cmds/installd/commands.c')
-rw-r--r--cmds/installd/commands.c563
1 files changed, 563 insertions, 0 deletions
diff --git a/cmds/installd/commands.c b/cmds/installd/commands.c
new file mode 100644
index 000000000000..ab7d67ac8c86
--- /dev/null
+++ b/cmds/installd/commands.c
@@ -0,0 +1,563 @@
+/*
+** Copyright 2008, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include "installd.h"
+
+int install(const char *pkgname, uid_t uid, gid_t gid)
+{
+ char pkgdir[PKG_PATH_MAX];
+ char libdir[PKG_PATH_MAX];
+
+ if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) {
+ LOGE("invalid uid/gid: %d %d\n", uid, gid);
+ return -1;
+
+ }
+ if (create_pkg_path(pkgdir, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX))
+ return -1;
+ if (create_pkg_path(libdir, PKG_LIB_PREFIX, pkgname, PKG_LIB_POSTFIX))
+ return -1;
+
+ if (mkdir(pkgdir, 0755) < 0) {
+ LOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno));
+ return -errno;
+ }
+ if (chown(pkgdir, uid, gid) < 0) {
+ LOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
+ unlink(pkgdir);
+ return -errno;
+ }
+ if (mkdir(libdir, 0755) < 0) {
+ LOGE("cannot create dir '%s': %s\n", libdir, strerror(errno));
+ unlink(pkgdir);
+ return -errno;
+ }
+ if (chown(libdir, AID_SYSTEM, AID_SYSTEM) < 0) {
+ LOGE("cannot chown dir '%s': %s\n", libdir, strerror(errno));
+ unlink(libdir);
+ unlink(pkgdir);
+ return -errno;
+ }
+ return 0;
+}
+
+int uninstall(const char *pkgname)
+{
+ char pkgdir[PKG_PATH_MAX];
+
+ if (create_pkg_path(pkgdir, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX))
+ return -1;
+
+ /* delete contents AND directory, no exceptions */
+ return delete_dir_contents(pkgdir, 1, 0);
+}
+
+int delete_user_data(const char *pkgname)
+{
+ char pkgdir[PKG_PATH_MAX];
+
+ if (create_pkg_path(pkgdir, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX))
+ return -1;
+
+ /* delete contents, excluding "lib", but not the directory itself */
+ return delete_dir_contents(pkgdir, 0, "lib");
+}
+
+int delete_cache(const char *pkgname)
+{
+ char cachedir[PKG_PATH_MAX];
+
+ if (create_pkg_path(cachedir, CACHE_DIR_PREFIX, pkgname, CACHE_DIR_POSTFIX))
+ return -1;
+
+ /* delete contents, not the directory, no exceptions */
+ return delete_dir_contents(cachedir, 0, 0);
+}
+
+
+static int disk_free(void)
+{
+ struct statfs sfs;
+ if (statfs(PKG_DIR_PREFIX, &sfs) == 0) {
+ return sfs.f_bavail * sfs.f_bsize;
+ } else {
+ return -1;
+ }
+}
+
+
+/* Try to ensure free_size bytes of storage are available.
+ * Returns 0 on success.
+ * This is rather simple-minded because doing a full LRU would
+ * be potentially memory-intensive, and without atime it would
+ * also require that apps constantly modify file metadata even
+ * when just reading from the cache, which is pretty awful.
+ */
+int free_cache(int free_size)
+{
+ const char *name;
+ int dfd, subfd;
+ DIR *d;
+ struct dirent *de;
+ int avail;
+
+ avail = disk_free();
+ if (avail < 0) return -1;
+
+ LOGI("free_cache(%d) avail %d\n", free_size, avail);
+ if (avail > free_size) return 0;
+
+ d = opendir(PKG_DIR_PREFIX);
+ if (d == NULL) {
+ LOGE("cannot open %s\n", PKG_DIR_PREFIX);
+ return 0;
+ }
+ dfd = dirfd(d);
+
+ while ((de = readdir(d))) {
+ if (de->d_type != DT_DIR) continue;
+ name = de->d_name;
+
+ /* always skip "." and ".." */
+ if (name[0] == '.') {
+ if (name[1] == 0) continue;
+ if ((name[1] == '.') && (name[2] == 0)) continue;
+ }
+
+ subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY);
+ if (subfd < 0) continue;
+
+ delete_dir_contents_fd(subfd, "cache");
+ close(subfd);
+
+ avail = disk_free();
+ if (avail > free_size) {
+ closedir(d);
+ return 0;
+ }
+ }
+ closedir(d);
+ return -1;
+}
+
+
+/* used by move_dex, rm_dex, etc to ensure that the provided paths
+ * don't point anywhere other than at the APK_DIR_PREFIX
+ */
+static int is_valid_apk_path(const char *path)
+{
+ int len = strlen(APK_DIR_PREFIX);
+ if (strncmp(path, APK_DIR_PREFIX, len)) {
+ len = strlen(PROTECTED_DIR_PREFIX);
+ if (strncmp(path, PROTECTED_DIR_PREFIX, len)) {
+ LOGE("invalid apk path '%s' (bad prefix)\n", path);
+ return 0;
+ }
+ }
+ if (strchr(path + len, '/')) {
+ LOGE("invalid apk path '%s' (subdir?)\n", path);
+ return 0;
+ }
+ if (path[len] == '.') {
+ LOGE("invalid apk path '%s' (trickery)\n", path);
+ return 0;
+ }
+ return 1;
+}
+
+int move_dex(const char *src, const char *dst)
+{
+ char src_dex[PKG_PATH_MAX];
+ char dst_dex[PKG_PATH_MAX];
+
+ if (!is_valid_apk_path(src)) return -1;
+ if (!is_valid_apk_path(dst)) return -1;
+
+ if (create_cache_path(src_dex, src)) return -1;
+ if (create_cache_path(dst_dex, dst)) return -1;
+
+ LOGI("move %s -> %s\n", src_dex, dst_dex);
+ if (rename(src_dex, dst_dex) < 0) {
+ return -1;
+ } else {
+ return 0;
+ }
+}
+
+int rm_dex(const char *path)
+{
+ char dex_path[PKG_PATH_MAX];
+
+ if (!is_valid_apk_path(path)) return -1;
+ if (create_cache_path(dex_path, path)) return -1;
+
+ LOGI("unlink %s\n", dex_path);
+ if (unlink(dex_path) < 0) {
+ return -1;
+ } else {
+ return 0;
+ }
+}
+
+int protect(char *pkgname, gid_t gid)
+{
+ struct stat s;
+ char pkgpath[PKG_PATH_MAX];
+
+ if (gid < AID_SYSTEM) return -1;
+
+ if (create_pkg_path(pkgpath, PROTECTED_DIR_PREFIX, pkgname, ".apk"))
+ return -1;
+
+ if (stat(pkgpath, &s) < 0) return -1;
+
+ if (chown(pkgpath, s.st_uid, gid) < 0) {
+ LOGE("failed to chgrp '%s': %s\n", pkgpath, strerror(errno));
+ return -1;
+ }
+
+ if (chmod(pkgpath, S_IRUSR|S_IWUSR|S_IRGRP) < 0) {
+ LOGE("failed to chmod '%s': %s\n", pkgpath, strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int stat_size(struct stat *s)
+{
+ int blksize = s->st_blksize;
+ int size = s->st_size;
+
+ if (blksize) {
+ /* round up to filesystem block size */
+ size = (size + blksize - 1) & (~(blksize - 1));
+ }
+
+ return size;
+}
+
+static int calculate_dir_size(int dfd)
+{
+ int size = 0;
+ struct stat s;
+ DIR *d;
+ struct dirent *de;
+
+ d = fdopendir(dfd);
+ if (d == NULL) {
+ close(dfd);
+ return 0;
+ }
+
+ while ((de = readdir(d))) {
+ const char *name = de->d_name;
+ if (de->d_type == DT_DIR) {
+ int subfd;
+ /* always skip "." and ".." */
+ if (name[0] == '.') {
+ if (name[1] == 0) continue;
+ if ((name[1] == '.') && (name[2] == 0)) continue;
+ }
+ subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY);
+ if (subfd >= 0) {
+ size += calculate_dir_size(subfd);
+ }
+ } else {
+ if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) {
+ size += stat_size(&s);
+ }
+ }
+ }
+ closedir(d);
+ return size;
+}
+
+int get_size(const char *pkgname, const char *apkpath,
+ const char *fwdlock_apkpath,
+ int *_codesize, int *_datasize, int *_cachesize)
+{
+ DIR *d;
+ int dfd;
+ struct dirent *de;
+ struct stat s;
+ char path[PKG_PATH_MAX];
+
+ int codesize = 0;
+ int datasize = 0;
+ int cachesize = 0;
+
+ /* count the source apk as code -- but only if it's not
+ * on the /system partition
+ */
+ if (strncmp(apkpath, "/system", 7) != 0) {
+ if (stat(apkpath, &s) == 0) {
+ codesize += stat_size(&s);
+ }
+ }
+ /* count the forward locked apk as code if it is given
+ */
+ if (fwdlock_apkpath != NULL && fwdlock_apkpath[0] != '!') {
+ if (stat(fwdlock_apkpath, &s) == 0) {
+ codesize += stat_size(&s);
+ }
+ }
+
+
+ /* count the cached dexfile as code */
+ if (!create_cache_path(path, apkpath)) {
+ if (stat(path, &s) == 0) {
+ codesize += stat_size(&s);
+ }
+ }
+
+ if (create_pkg_path(path, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) {
+ goto done;
+ }
+
+ d = opendir(path);
+ if (d == NULL) {
+ goto done;
+ }
+ dfd = dirfd(d);
+
+ /* most stuff in the pkgdir is data, except for the "cache"
+ * directory and below, which is cache, and the "lib" directory
+ * and below, which is code...
+ */
+ while ((de = readdir(d))) {
+ const char *name = de->d_name;
+
+ if (de->d_type == DT_DIR) {
+ int subfd;
+ /* always skip "." and ".." */
+ if (name[0] == '.') {
+ if (name[1] == 0) continue;
+ if ((name[1] == '.') && (name[2] == 0)) continue;
+ }
+ subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY);
+ if (subfd >= 0) {
+ int size = calculate_dir_size(subfd);
+ if (!strcmp(name,"lib")) {
+ codesize += size;
+ } else if(!strcmp(name,"cache")) {
+ cachesize += size;
+ } else {
+ datasize += size;
+ }
+ }
+ } else {
+ if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) {
+ datasize += stat_size(&s);
+ }
+ }
+ }
+ closedir(d);
+done:
+ *_codesize = codesize;
+ *_datasize = datasize;
+ *_cachesize = cachesize;
+ return 0;
+}
+
+
+/* a simpler version of dexOptGenerateCacheFileName() */
+int create_cache_path(char path[PKG_PATH_MAX], const char *src)
+{
+ char *tmp;
+ int srclen;
+ int dstlen;
+
+ srclen = strlen(src);
+
+ /* demand that we are an absolute path */
+ if ((src == 0) || (src[0] != '/') || strstr(src,"..")) {
+ return -1;
+ }
+
+ if (srclen > PKG_PATH_MAX) { // XXX: PKG_NAME_MAX?
+ return -1;
+ }
+
+ dstlen = srclen + strlen(DALVIK_CACHE_PREFIX) +
+ strlen(DALVIK_CACHE_POSTFIX) + 1;
+
+ if (dstlen > PKG_PATH_MAX) {
+ return -1;
+ }
+
+ sprintf(path,"%s%s%s",
+ DALVIK_CACHE_PREFIX,
+ src + 1, /* skip the leading / */
+ DALVIK_CACHE_POSTFIX);
+
+ for(tmp = path + strlen(DALVIK_CACHE_PREFIX); *tmp; tmp++) {
+ if (*tmp == '/') {
+ *tmp = '@';
+ }
+ }
+
+ return 0;
+}
+
+static void run_dexopt(int zip_fd, int odex_fd, const char* input_file_name)
+{
+ static const char* DEX_OPT_BIN = "/system/bin/dexopt";
+ static const int MAX_INT_LEN = 12; // '-'+10dig+'\0' -OR- 0x+8dig
+ char zip_num[MAX_INT_LEN];
+ char odex_num[MAX_INT_LEN];
+
+ sprintf(zip_num, "%d", zip_fd);
+ sprintf(odex_num, "%d", odex_fd);
+
+ execl(DEX_OPT_BIN, DEX_OPT_BIN, "--zip", zip_num, odex_num, input_file_name,
+ (char*) NULL);
+ LOGE("execl(%s) failed: %s\n", DEX_OPT_BIN, strerror(errno));
+}
+
+static int wait_dexopt(pid_t pid, const char* apk_path)
+{
+ int status;
+ pid_t got_pid;
+
+ /*
+ * Wait for the optimization process to finish.
+ */
+ while (1) {
+ got_pid = waitpid(pid, &status, 0);
+ if (got_pid == -1 && errno == EINTR) {
+ printf("waitpid interrupted, retrying\n");
+ } else {
+ break;
+ }
+ }
+ if (got_pid != pid) {
+ LOGW("waitpid failed: wanted %d, got %d: %s\n",
+ (int) pid, (int) got_pid, strerror(errno));
+ return 1;
+ }
+
+ if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
+ LOGD("DexInv: --- END '%s' (success) ---\n", apk_path);
+ return 0;
+ } else {
+ LOGW("DexInv: --- END '%s' --- status=0x%04x, process failed\n",
+ apk_path, status);
+ return status; /* always nonzero */
+ }
+}
+
+int dexopt(const char *apk_path, uid_t uid, int is_public)
+{
+ struct utimbuf ut;
+ struct stat apk_stat, dex_stat;
+ char dex_path[PKG_PATH_MAX];
+ char *end;
+ int res, zip_fd=-1, odex_fd=-1;
+
+ /* Before anything else: is there a .odex file? If so, we have
+ * pre-optimized the apk and there is nothing to do here.
+ */
+ if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) {
+ return -1;
+ }
+
+ strcpy(dex_path, apk_path);
+ end = strrchr(dex_path, '.');
+ if (end != NULL) {
+ strcpy(end, ".odex");
+ if (stat(dex_path, &dex_stat) == 0) {
+ return 0;
+ }
+ }
+
+ if (create_cache_path(dex_path, apk_path)) {
+ return -1;
+ }
+
+ memset(&apk_stat, 0, sizeof(apk_stat));
+ stat(apk_path, &apk_stat);
+
+ zip_fd = open(apk_path, O_RDONLY, 0);
+ if (zip_fd < 0) {
+ LOGE("dexopt cannot open '%s' for input\n", apk_path);
+ return -1;
+ }
+
+ unlink(dex_path);
+ odex_fd = open(dex_path, O_RDWR | O_CREAT | O_EXCL, 0644);
+ if (odex_fd < 0) {
+ LOGE("dexopt cannot open '%s' for output\n", dex_path);
+ goto fail;
+ }
+ if (fchown(odex_fd, AID_SYSTEM, uid) < 0) {
+ LOGE("dexopt cannot chown '%s'\n", dex_path);
+ goto fail;
+ }
+ if (fchmod(odex_fd,
+ S_IRUSR|S_IWUSR|S_IRGRP |
+ (is_public ? S_IROTH : 0)) < 0) {
+ LOGE("dexopt cannot chmod '%s'\n", dex_path);
+ goto fail;
+ }
+
+ LOGD("DexInv: --- BEGIN '%s' ---\n", apk_path);
+
+ pid_t pid;
+ pid = fork();
+ if (pid == 0) {
+ /* child -- drop privileges before continuing */
+ if (setgid(uid) != 0) {
+ LOGE("setgid(%d) failed during dexopt\n", uid);
+ exit(64);
+ }
+ if (setuid(uid) != 0) {
+ LOGE("setuid(%d) during dexopt\n", uid);
+ exit(65);
+ }
+ if (flock(odex_fd, LOCK_EX | LOCK_NB) != 0) {
+ LOGE("flock(%s) failed: %s\n", dex_path, strerror(errno));
+ exit(66);
+ }
+
+ run_dexopt(zip_fd, odex_fd, apk_path); /* does not return */
+ exit(67);
+ } else {
+ res = wait_dexopt(pid, apk_path);
+ if (res != 0) {
+ LOGE("dexopt failed on '%s' res = %d\n", dex_path, res);
+ goto fail;
+ }
+ }
+
+ ut.actime = apk_stat.st_atime;
+ ut.modtime = apk_stat.st_mtime;
+ utime(dex_path, &ut);
+
+ close(odex_fd);
+ close(zip_fd);
+ return 0;
+
+fail:
+ if (odex_fd >= 0) {
+ close(odex_fd);
+ unlink(dex_path);
+ }
+ if (zip_fd >= 0) {
+ close(zip_fd);
+ }
+ return -1;
+}
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-20 09:17:36 +0000